can i shoot northen lights,in other words how long can the lens stay open?
16341
Haven't tried anything of an extended duration. The button can 'slide' locking the shutter open, and upon 'clicking' the control will release, closing the aperture. I would assume this would stay open as long as the juice held up in the camera.
16342
You can hold the shutter open for up to 30 minutes. Check out the live time function. It make long exposure shooting much easier.
1699233
Can Be - The GN for this flash is relatively low since it's designed for close up work, within a foot or two. However, it's probably fine as a fill light or if you're in the habit of using a 50mm lens or wider as a portrait lens. Personally I like shooting portraits with focal lengths greater than 100mm and using at least a couple of lights at an angle and not directly head-on. For glamor lighting (head on lighting) I use an A-B ringflash with w/ 32inch softbox, I don't use this for portraits but for specific fashion shoots and clothing designers.
469590
The lens I have are glass, and metal rings. They can turn for different effects.
1787830
At Amazon you can buy lens kits, also at Samsung web site. About how long you can keep the shutter open, I suggest you read the user`s manual, it can donwload from the Samsung web site. Regards
621867
If the intended use is Astronomy or star gazing, then yes, these can be used at night. When moving from either a heated (winter) or air conditioned (summer) interior, allow the optics time to acclimate to the external air temperature to prevent fogging. This generally takes at least 30 minutes, and by then, your eyes will be well adjusted for night vision, making for an enjoyable experience.
2206304
You don't have to expose the internal mechanism for long. When you remove the 14-42 press the open camera to your chest until you have the new lens ready. Whammm, minimal exposure.
1433334
The lens itself does not have any rubber gaskets to keep out water and dust. At its closest focusing distance, there is a gap between the first element and the mount where you can see the electronic chip so put the focus somewhere in the middle during storage so nothing gets inside the lens. I've personally used it in the snow and got it pretty wet(heh) but all in all it was ok when I got home. It should be fine for usage in moderately dusty places.
1488091
Yes, you can. I do it all the time and have for years.I keep my lenses for two weeks before I throw them away.
164689
A lens with a lot of light gathering ability is called a fast lens. A lenses light gathering ability is related to the size of the opening, i.e., the f-stop. The smaller the f-stop the larger the opening. This lens is F4 at 70mm and and f5.6 (smaller) at 300mm. This is not a fast lens. It's not going to be great for low light. In all honesty I haven't tried it under those conditions. I would expect to have to push the iso really really high to keep the shutter speed high enough to avoid motion blur. However, the low-mid priced telephoto lenses are going to be in this range of f-stop. because it costs a lot more to make a fast lens. Ideally you would like a faster lens, like Nikon's 70-200, F2.8. However the price for that lens is about 2 grand (US $).
1018118
Yes. The lens cover has a pin hole in it allowing you to use it in light environments.
1205535
I have had fun using this lens. I adjust for the f6.3 using shutter speed and iso. I do not use it at night. But on a recent vacation I was able to take good pix of distant features in dim to overcast to bright light. Use a tripod. After all, it is less than$200, and takes little extra space in the camera bag. It is worth having.
826685
Dear, Yes, I have the same problem. The only way to open & close the lens is with the switch on & off botton. KR
1107980
That depends on of course ... the distance between the light & the subject, the exposure setting for aperture used on the camera, and if one uses any modifiers or neutral-density gels. In my experience, at say 8 feet you'll get an exposure "direct" of about F8 or so from one of these units. While they have no controls for output, it is easy to screw off the cover, tape some some small pieces of ND gels over the flash tube, and therefore cut down the light leaving the head if needed.
80967
Actually David if your shooting with a SLR you should have a bulb setting on your camera. In this mode you control the length of your exposure. The remote has a lock feature that will allow you to take long exposures.
871080
You set the camera body on Bulb and you can set the amount of time the timer keeps the shutter open. 2-7-12 minutes, etc. which is the same as open continuously.
1914253
My son has this case, and he says that you can remove the lens if you want to change. He has used it with slow motion effect while skiing, and has some pretty cool pics! Be sure to get a floating wrist strap just incase.
2156451
As far as I know, there is no threading, at least in the one I got about three years ago. The outside diameter is about 69mm, and it has no threads. I saw a mod by a German guy on YouTube and I did the same. I bought a 72mm rubber lens hood, removed the rubber part and kept the plastic ring. Then I wrapped some electrician's tape around the lens, so I could fit the&#65279; plastic ring on it without any glue: I just pressed and turned the ring, and it got stuck pretty tightly. Now I can use a 72mm UV or polarizing filter.&#65279;